CN112387900B - Method for straightening pile head reinforcing steel bar - Google Patents
Method for straightening pile head reinforcing steel bar Download PDFInfo
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- CN112387900B CN112387900B CN202011333799.8A CN202011333799A CN112387900B CN 112387900 B CN112387900 B CN 112387900B CN 202011333799 A CN202011333799 A CN 202011333799A CN 112387900 B CN112387900 B CN 112387900B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F1/00—Bending wire other than coiling; Straightening wire
- B21F1/02—Straightening
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Abstract
The invention discloses a pile head reinforcing steel bar straightening method, which comprises the steps of obtaining a pile head reinforcing steel bar straightening device, sleeving a fixed lantern ring on a reinforcing steel bar to be straightened, moving the fixed lantern ring to the bottom of the reinforcing steel bar, screwing each fixed stud on a fixed sliding sleeve to enable all the fixed studs to be abutted against the reinforcing steel bar to be straightened, sleeving a straightening lantern ring on the pile head reinforcing steel bar straightening device, penetrating through a guide sliding rod, installing a supporting platform to fix the guide sliding rod, respectively sleeving adjusting sliding sleeves at two ends of a lifting screw on an upper adjusting sliding rod and a lower adjusting sliding rod, moving the lifting screw to enable the lifting screw to be abutted against a lifting groove on a lifting block, then installing an external connecting block, screwing the lifting screw on a screwing part to enable the straightening lantern ring to move towards the direction of the supporting platform until the straightening lantern ring is moved out from the upper end of the reinforcing steel bar to be straightened. The pile head steel bar straightening machine is convenient and reliable to use, can conveniently straighten pile head steel bars, and improves construction efficiency.
Description
Technical Field
The invention relates to a steel bar straightening technology, in particular to a pile head steel bar straightening method.
Background
Pile head marks are higher than design elevations when the cast-in-place pile is constructed according to the standard, and the pile head marks need to be manually removed to ensure the strength of a pile body. The pile body reinforcing steel bars are prone to bending after manual removal, and on-site common methods are that workers directly straighten pile head reinforcing steel bars, so that construction is very inconvenient, particularly straightening of large-diameter reinforcing steel bars is extremely difficult, straightening speed of manual plates is low, and efficiency is low.
Disclosure of Invention
Aiming at the defects of the prior art, the technical problems to be solved by the invention are as follows: how to provide a straightening method of pile head reinforcing steel bars, which is convenient to straighten the pile head reinforcing steel bars and has high straightening efficiency.
In order to solve the technical problems, the invention adopts the following technical scheme:
a pile head reinforcing steel bar straightening method comprises the following steps:
(1) a pile head steel bar straightening device is obtained, the pile head steel bar straightening device comprises a fixed ring sleeve and a straightening ring sleeve which are arranged on the same central line, the inner diameter of the fixed ring sleeve is larger than the diameter of a steel bar to be straightened, at least three fixed screw holes are uniformly arranged on the sleeve body of the fixed ring sleeve at intervals around the central line direction of the fixed ring sleeve, the fixed screw holes are through holes, the central line of each fixed screw hole extends along the radial direction of the fixed ring sleeve, the central lines of all the fixed screw holes are positioned on the same plane, a fixed screw bolt matched with the fixed screw holes in a threaded manner is arranged in each fixed screw hole, the fixed screw bolt faces one end of the inner hole of the fixed ring sleeve and can extend into the inner hole of the fixed ring sleeve, a plurality of guide slide bars are uniformly arranged on the straightening ring sleeve at intervals around the central line direction of the guide slide bars, the central line direction of the guide slide bars is parallel to the central line direction of the straightening ring sleeve, the straightening ring sleeve can be matched with the guide slide bars in the central line direction of the straightening ring sleeve in a sliding manner, and one side of the straightening ring sleeve far away from the fixed ring sleeve is provided with a supporting platform, two ends of the guide slide bar are respectively and fixedly connected to the fixed ring sleeve and the supporting platform, and the straightening ring sleeve is provided with a straightening inner hole which is in clearance fit with the steel bar to be straightened and is used for straightening the steel bar to be straightened;
the outer side of the supporting platform and the position corresponding to one side of the lifting block are fixedly connected with an upper adjusting slide bar, the central line direction of the upper adjusting slide bar is arranged to extend along the opposite direction of the two lifting grooves, the sleeve body of the fixed ring sleeve is fixedly connected with a lower adjusting slide rod corresponding to the position of the upper adjusting slide rod, the central line direction of the lower adjusting slide rod is parallel to the central line direction of the upper adjusting slide rod, the central line of the lower adjusting slide rod and the central line of the lifting hole are positioned on the same plane, the upper adjusting slide rod and the lower adjusting slide rod are respectively sleeved with an adjusting slide sleeve which can be in sliding fit with the upper adjusting slide rod along the central line direction of the upper adjusting slide rod, a lifting screw rod which extends along the direction parallel to the central line direction of the lifting hole is arranged between the two adjusting slide sleeves, the central line of the lifting screw rod is respectively positioned on the same plane with the central lines of the upper adjusting slide rod and the lower adjusting slide rod, one end of the lifting screw rod, facing to the upper adjusting slide rod, is convexly provided with a twisting part along the central line direction of the lifting screw rod, the twisting part is provided with at least two twisting surfaces which are parallel to the central line of the lifting screw rod so as to facilitate the twisting operation of the lifting screw rod, an upper rotating part is formed by protruding one end of the twisting part, which is far away from the lifting screw rod, along the direction of the central line of the twisting part, a lower rotating part is formed by protruding one end of the lifting screw rod, which faces the lower adjusting slide rod, along the direction of the central line of the lifting screw rod, the upper rotating part and the lower rotating part are respectively connected to the adjusting slide sleeve on one side of the upper rotating part and the lower rotating part in a rotating mode so that the lifting screw rod can rotate around the direction of the central line of the lifting screw rod, and the lifting screw rod can be movably arranged in the lifting hole and is in threaded fit with the straightening ring sleeve through a lifting thread;
(2) sleeving a fixed lantern ring on a steel bar to be straightened, moving a fixed ring sleeve to move the fixed lantern ring to the bottom of the steel bar, screwing each fixed stud on a fixed sliding sleeve, abutting all the fixed studs to be straightened, so that the fixed ring sleeve and the steel bar to be straightened are fixed, then sleeving a straightening ring sleeve, adjusting the position of the straightening ring sleeve, enabling a lifting groove on the straightening ring sleeve to correspond to the position of a lower adjusting slide bar on the fixed ring sleeve, respectively penetrating guide slide bars through the straightening ring sleeve, fixing the lower ends of the guide slide bars on the fixed ring sleeve, moving the straightening ring sleeve to be arranged on the upper side of the fixed ring sleeve, then installing a supporting platform, enabling an upper adjusting slide bar on the supporting platform to correspond to the position of a lower adjusting slide bar on the fixed ring sleeve when the supporting platform is installed, and fixing the upper end of each guide slide bar on the supporting platform;
(3) the adjusting sliding sleeves at two ends of the lifting screw are respectively sleeved on the upper adjusting sliding rod and the lower adjusting sliding rod, then the lifting screw is moved to be abutted against a lifting groove on the lifting block, then the external connecting block is installed, the lifting groove on the external connecting block and the lifting groove on the lifting block are folded to form a lifting hole, the lifting screw is matched with a lifting thread in the lifting hole, the lifting screw is screwed on the screwing part through acting, and then the straightening ring sleeve moves towards the direction of the supporting platform until the straightening ring sleeve moves out from the upper end of the steel bar to be straightened.
As optimization, the straightening inner hole comprises a straightening front hole and a straightening rear hole which are arranged on the same central line, the straightening front hole is arranged on one side of the supporting platform, the diameter of the straightening front hole is larger than that of the straightening rear hole, a straightening inner sleeve is embedded in the straightening front hole and is arranged on the same central line with the straightening front hole, one end, facing the straightening rear hole, of the straightening inner sleeve abuts against the bottom of the straightening front hole, the length of the straightening inner sleeve along the central line direction is consistent with that of the straightening front hole along the central line direction, the inner hole of the straightening inner sleeve is used for straightening reinforcing steel bars, and the inner diameter of the straightening inner sleeve is smaller than that of the straightening rear hole; the inner wall of the straightening front hole is symmetrically provided with two vertical grooves by taking the center line of the straightening front hole as a symmetry axis, the vertical grooves extend in the direction parallel to the center line of the straightening front hole, one end of each vertical groove extends to the bottom of the straightening front hole, the other end of each vertical groove is communicated with the straightening ring sleeve, the hole bottom of the straightening front hole and the position corresponding to each vertical groove are provided with a transverse groove in the direction of the hole diameter of the straightening front hole in an extending manner, the transverse groove is communicated with the corresponding vertical groove to form an L-shaped bent groove, a vertical rod extending in the extending direction of the vertical groove is accommodated in each vertical groove, the length of each vertical rod is larger than that of each vertical groove, each vertical rod can be in sliding fit with the vertical groove in the extending direction of the vertical groove, one end, facing towards the straightening rear hole, of each vertical rod is bent in the extending direction of the transverse groove to form a transverse rods, the transverse rods are accommodated in the transverse grooves, one end, on the side of the straightening ring sleeve, where the straightening front hole is provided with an arched pull handle, the two ends of the arched pull handle are respectively hinged with one ends extending out of the two vertical rods outside the straightening vertical rods through hinge shafts, the two hinge shafts are arranged along the direction parallel to the central line of the cross rod and have the same central line, and when the arched pull handle rotates to the position where the plane is vertical to the central line of the straightening ring sleeve, the projection of the arched pull handle along the direction vertical to the central line of the straightening ring sleeve is positioned outside the projection of the straightening inner sleeve along the direction of the central line of the straightening ring sleeve.
In order to avoid the straightening inner sleeve from shaking in the straightening front hole, the tolerance fit between the straightening inner sleeve and the straightening front hole is small, when the straightening inner sleeve is embedded in the straightening front hole and needs to be taken out, the straightening inner sleeve needs to be drawn outside, the direction of the drawing force is difficult to be parallel to the direction of the central line of the straightening front hole, once deviation occurs, the contact between the straightening inner sleeve and the straightening front hole is increased, and the difficulty in taking out the straightening inner sleeve is further increased. In the invention, before the straightening inner sleeve is embedded, the vertical rod is firstly placed in the vertical groove, the cross rod at the front end of the vertical rod is placed in the cross groove, the vertical rod and the cross rod can not interfere with the embedding of the straightening inner sleeve, when the straightening inner sleeve needs to be taken out, the arched pull handle is rotated and then pulled, the arched pull handle can change the direction of a part of the acting force applied by an operator, after the acting force is transmitted to the vertical rod, the vertical rod can be in sliding fit along the extension direction of the vertical groove, the direction of the acting force is further changed, therefore, the cross rod below the vertical rod only receives the acting force along the extension direction of the cross rod and the extension direction of the vertical rod, and the cross rod is positioned below the straightening inner sleeve, so that the acting force along the extension direction of the cross rod can not interfere with the straightening inner sleeve, then the straightening inner sleeve only receives the acting force along the extension direction of the vertical rod, and thus the excessive contact between the straightening inner sleeve and the straightening front hole is avoided, the straightening inner sleeve can be taken out more easily.
And optimally, an arc-shaped chamfer is arranged at the orifice of the inner hole at one end of the straightening inner sleeve, which is far away from the straightened hole. The steel bar is a ribbed steel bar, and the chamfer of the inner hole opening of the straightening inner sleeve is easy to interfere with the steel bar rib on the inclined steel bar, so that the clamping condition can occur. And the arc surface of the arc chamfer provides a transition surface for the reinforcing steel bar, so that the reinforcing steel bar can smoothly enter the inner hole of the straightening inner sleeve.
And optimally, a plurality of annular oil grooves which are the same as the center line of the straightening front hole are uniformly arranged on the inner wall of the straightening front hole along the direction of the center line of the straightening front hole at intervals, and the annular oil grooves are communicated with the vertical grooves. After the straightening inner sleeve is arranged in the straightening front hole, the straightening inner sleeve is affected by the environment and rusted, and the rusted oxides increase the difficulty in taking out the straightening inner sleeve. In the invention, by injecting lubricating oil into the vertical hole, the lubricating oil can enter the annular oil groove, and by virtue of the capillary phenomenon, the lubricating oil can permeate into the gap between the straightening front hole and the straightening inner sleeve to provide lubrication for the straightening front hole, so that the straightening inner sleeve is convenient to take out.
In conclusion, the beneficial effects of the invention are as follows: the pile head steel bar straightening machine is convenient and reliable to use, can conveniently straighten pile head steel bars, and improves construction efficiency.
Drawings
For purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made in detail to the present invention as illustrated in the accompanying drawings, in which:
FIG. 1 is a schematic structural view of a pile head rebar straightening device according to the present invention;
figure 2 is a cross-sectional view of a straightening ring according to the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the method for straightening the pile head reinforcing steel bar in the embodiment includes the following steps:
(1) a pile head reinforcing steel bar straightening device is obtained, the pile head reinforcing steel bar straightening device comprises a fixed ring sleeve 1 and a straightening ring sleeve 2 which are arranged on the same central line, the inner diameter of the fixed ring sleeve 1 is larger than the diameter of a reinforcing steel bar to be straightened, at least three fixing screw holes are uniformly arranged on a sleeve body of the fixed ring sleeve 1 at intervals around the central line direction of the fixed ring sleeve, the fixing screw holes are through holes, the central line of each fixing screw hole extends along the radial direction of the fixed ring sleeve, the central lines of all the fixing screw holes are positioned on the same plane, fixing screw bolts 3 matched with the fixing screw holes in a threaded manner are arranged at the positions of the fixing screw holes, one ends of the fixing screw bolts 3 facing to the inner holes of the fixed ring sleeve 1 can extend into the inner holes of the fixed ring sleeve 1, a plurality of guide slide bars 4 are uniformly arranged on the straightening ring sleeve 2 at intervals around the central line direction of the guide slide bars 4, the central line direction of the guide slide bars 4 is parallel to the central line direction of the straightening ring sleeve 2, the straightening ring sleeve 2 can be in a sliding fit with the guide slide way along the central line direction of the guide slide bars 4, a supporting platform 5 is arranged on one side of the straightening ring sleeve 2, which is far away from the fixed ring sleeve 1, two ends of a guide slide rod 4 are respectively and fixedly connected to the fixed ring sleeve 1 and the supporting platform 5, and the straightening ring sleeve 2 is provided with a straightening inner hole which is in clearance fit with the steel bar to be straightened and is used for straightening the steel bar to be straightened;
the sleeve body of the straightening ring sleeve 2 protrudes outwards to form a lifting block, one side of the lifting block, which is back to the straightening inner hole, is provided with an external connecting block 6, the external connecting block 6 is detachably connected to the lifting block, the side surface of the lifting block, which is opposite to the external connecting block 6, is respectively provided with lifting grooves 7 which are opposite and extend along the direction parallel to the central line of the straightening ring sleeve 2, the lifting grooves 7 are through grooves, when the external connecting block 6 is connected to the lifting block, the two lifting grooves 7 can be folded to form a lifting hole, the inner wall of the lifting hole is provided with a lifting thread from one end to the other end along the direction of the central line thereof, the projection of the lifting hole along the direction of the central line thereof is positioned outside the projection of the supporting platform 5 along the direction of the central line of the lifting hole and the projection of the fixing ring sleeve 1 along the direction of the central line of the lifting hole, the position of the outer side of the supporting platform 5, which corresponds to the lifting block, is fixedly connected with an upper adjusting slide rod 8, the central line direction of the upper adjusting slide bar 8 is arranged along the opposite direction of the two lifting grooves 7 in an extending way, the position of the fixing ring sleeve 1, which corresponds to the upper adjusting slide bar 8, is fixedly connected with a lower adjusting slide bar 9, the central line direction of the lower adjusting slide bar 9 is parallel to the central line direction of the upper adjusting slide bar 8, the central line of the lower adjusting slide bar 9 and the central line of the lifting hole are positioned on the same plane, the upper adjusting slide bar 8 and the lower adjusting slide bar 9 are respectively sleeved with an adjusting slide sleeve 10 which can be in sliding fit with the upper adjusting slide bar along the central line direction, a lifting screw 11 which extends along the central line direction of the lifting hole is arranged between the two adjusting slide sleeves 10, the central line of the lifting screw 11 is respectively positioned on the same plane with the central lines of the upper adjusting slide bar 8 and the lower adjusting slide bar 9, and a twisting part is formed by the lifting screw 11 protruding towards one end of the upper adjusting slide bar 8 along the central line direction, the twisting part is provided with at least two twisting surfaces which are parallel to each other and parallel to the central line of the lifting screw rod 11 so as to conveniently twist and rotate the lifting screw rod 11, the end, far away from the lifting screw rod 11, of the twisting part is provided with an upper rotating part along the direction of the central line, the end, facing the lower adjusting slide rod 9, of the lifting screw rod 11 is provided with a lower rotating part along the direction of the central line, the upper rotating part and the lower rotating part are respectively connected on the adjusting slide sleeve 10 on one side of the upper rotating part and the lower rotating part in a rotating mode so as to enable the lifting screw rod 11 to rotate around the direction of the central line, and the lifting screw rod 11 can be moved and arranged in the lifting hole and is in threaded fit with the straightening ring sleeve 2 through lifting threads.
(2) Sleeving the fixed lantern ring 1 on the steel bar to be straightened, moving the fixed lantern ring 1 to the bottom of the steel bar, screwing each fixed stud 3 on the fixed sliding sleeve 1 to enable all the fixed studs 3 to be tightly propped against the steel bar to be straightened so as to fix the fixed lantern ring 1 and the steel bar to be straightened, then the straightening ring sleeve 2 is sleeved, the position of the straightening ring sleeve 2 is adjusted to ensure that the lifting groove on the straightening ring sleeve 2 corresponds to the position of the lower adjusting slide rod 9 on the fixed ring sleeve 1, then, the guide slide bars 4 respectively penetrate through the straightening ring sleeves 2, the lower ends of the guide slide bars 4 are fixed on the fixed ring sleeves 1, the straightening ring sleeves 2 are moved to be arranged on the upper sides of the fixed ring sleeves 1, then the supporting platforms 5 are installed, when the supporting platforms 5 are installed, the upper adjusting slide bars 8 on the supporting platforms 5 correspond to the lower adjusting slide bars 9 on the fixed ring sleeves 1 in position, and the upper ends of the guide slide bars 4 are fixed on the supporting platforms 5;
(3) the adjusting sliding sleeves 10 at two ends of the lifting screw 11 are respectively sleeved on the upper adjusting sliding rod 8 and the lower adjusting sliding rod 9, then the lifting screw 11 is moved to be abutted against a lifting groove on the lifting block, then the external connecting block 6 is installed, the lifting groove on the external connecting block 6 and the lifting groove on the lifting block are folded to form a lifting hole, the lifting screw 11 is matched with a lifting thread in the lifting hole, the lifting screw 11 is screwed on the screwing part through acting, and then the straightening ring sleeve 2 moves towards the direction of the supporting platform 5 until the straightening ring sleeve 2 moves out from the upper end of the steel bar to be straightened.
In the specific embodiment, the straightening inner hole comprises a straightening front hole and a straightening rear hole which are arranged on the same central line, the straightening front hole is positioned on one side of the supporting platform 5, the diameter of the straightening front hole is larger than that of the straightening rear hole, a straightening inner sleeve 12 is embedded in the straightening front hole and is arranged on the same central line with the straightening front hole, one end, facing the straightening rear hole, of the straightening inner sleeve 12 abuts against the bottom of the straightening front hole, the length of the straightening inner sleeve 12 in the direction of the central line of the straightening inner sleeve is consistent with that of the straightening front hole in the direction of the central line of the straightening front hole, the inner hole of the straightening inner sleeve 12 is used for straightening reinforcing steel bars, and the inner diameter of the straightening inner sleeve 12 is smaller than that of the straightening rear hole; the inner wall of the straightening front hole is symmetrically provided with two vertical grooves by taking the center line of the straightening front hole as a symmetry axis, the vertical grooves extend in the direction parallel to the center line of the straightening front hole, one end of each vertical groove extends to the bottom of the straightening front hole, the other end of each vertical groove is communicated with the outside of the straightening ring sleeve 2, the hole bottom of the straightening front hole and the position corresponding to each vertical groove are provided with a transverse groove in the direction of the hole diameter of the straightening front hole, the transverse groove is communicated with the corresponding vertical groove to form an L-shaped bent groove, a vertical rod 13 extending in the extending direction of the vertical groove is accommodated in each vertical groove, the length of each vertical rod 13 is larger than that of each vertical groove, each vertical rod 13 can be in sliding fit with the vertical grooves in the extending direction, one end, facing the straightening rear hole, of each vertical rod 13 is bent in the extending direction of the transverse groove to form a transverse rod 14, the transverse rod 14 is accommodated in the transverse groove, one end, on the side, of the straightening ring sleeve 2, where the straightening front hole is located, is provided with an arched pull handle 15, two ends of an arched pull handle 15 are respectively hinged with one end of two vertical rods 13 extending out of the straightening ring sleeve 2 through hinge shafts, the two hinge shafts are arranged on the same central line and along the direction parallel to the central line of the cross rod 14, and when the arched pull handle 15 rotates to the position where the plane is perpendicular to the central line of the straightening ring sleeve 2, the projection of the arched pull handle 15 along the direction perpendicular to the central line of the straightening ring sleeve 2 is positioned outside the projection of the straightening inner sleeve 12 along the direction of the central line of the straightening ring sleeve 2.
In this embodiment, an arc-shaped chamfer is arranged at an inner hole opening of one end of the straightening inner sleeve 12 far away from the straightened hole.
In this specific embodiment, a plurality of annular oil grooves having the same center line as the straightening front hole are uniformly arranged on the inner wall of the straightening front hole at intervals along the direction of the center line of the straightening front hole, and the annular oil grooves are communicated with the vertical groove.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A pile head reinforcing steel bar straightening method is characterized by comprising the following steps: the method comprises the following steps:
(1) a pile head steel bar straightening device is obtained, the pile head steel bar straightening device comprises a fixed ring sleeve and a straightening ring sleeve which are arranged on the same central line, the inner diameter of the fixed ring sleeve is larger than the diameter of a steel bar to be straightened, at least three fixed screw holes are uniformly arranged on the sleeve body of the fixed ring sleeve at intervals around the central line direction of the fixed ring sleeve, the fixed screw holes are through holes, the central line of each fixed screw hole extends along the radial direction of the fixed ring sleeve, the central lines of all the fixed screw holes are positioned on the same plane, a fixed screw bolt matched with the fixed screw holes in a threaded manner is arranged in each fixed screw hole, the fixed screw bolt faces one end of the inner hole of the fixed ring sleeve and can extend into the inner hole of the fixed ring sleeve, a plurality of guide slide bars are uniformly arranged on the straightening ring sleeve at intervals around the central line direction of the guide slide bars, the central line direction of the guide slide bars is parallel to the central line direction of the straightening ring sleeve, the straightening ring sleeve can be matched with the guide slide bars in the central line direction of the straightening ring sleeve in a sliding manner, and one side of the straightening ring sleeve far away from the fixed ring sleeve is provided with a supporting platform, two ends of the guide slide bar are respectively and fixedly connected to the fixed ring sleeve and the supporting platform, and the straightening ring sleeve is provided with a straightening inner hole which is in clearance fit with the steel bar to be straightened and is used for straightening the steel bar to be straightened;
the outer side of the supporting platform and the position corresponding to one side of the lifting block are fixedly connected with an upper adjusting slide bar, the central line direction of the upper adjusting slide bar is arranged to extend along the opposite direction of the two lifting grooves, the sleeve body of the fixed ring sleeve is fixedly connected with a lower adjusting slide rod corresponding to the position of the upper adjusting slide rod, the central line direction of the lower adjusting slide rod is parallel to the central line direction of the upper adjusting slide rod, the central line of the lower adjusting slide rod and the central line of the lifting hole are positioned on the same plane, the upper adjusting slide rod and the lower adjusting slide rod are respectively sleeved with an adjusting slide sleeve which can be in sliding fit with the upper adjusting slide rod along the central line direction of the upper adjusting slide rod, a lifting screw rod which extends along the direction parallel to the central line direction of the lifting hole is arranged between the two adjusting slide sleeves, the central line of the lifting screw rod is respectively positioned on the same plane with the central lines of the upper adjusting slide rod and the lower adjusting slide rod, one end of the lifting screw rod, facing to the upper adjusting slide rod, is convexly provided with a twisting part along the central line direction of the lifting screw rod, the twisting part is provided with at least two twisting surfaces which are parallel to the central line of the lifting screw rod so as to facilitate the twisting operation of the lifting screw rod, an upper rotating part is formed by protruding one end of the twisting part, which is far away from the lifting screw rod, along the direction of the central line of the twisting part, a lower rotating part is formed by protruding one end of the lifting screw rod, which faces the lower adjusting slide rod, along the direction of the central line of the lifting screw rod, the upper rotating part and the lower rotating part are respectively connected to the adjusting slide sleeve on one side of the upper rotating part and the lower rotating part in a rotating mode so that the lifting screw rod can rotate around the direction of the central line of the lifting screw rod, and the lifting screw rod can be movably arranged in the lifting hole and is in threaded fit with the straightening ring sleeve through a lifting thread;
(2) sleeving a fixed lantern ring on a steel bar to be straightened, moving a fixed ring sleeve to move the fixed lantern ring to the bottom of the steel bar, screwing each fixed stud on a fixed sliding sleeve, abutting all the fixed studs to be straightened, so that the fixed ring sleeve and the steel bar to be straightened are fixed, then sleeving a straightening ring sleeve, adjusting the position of the straightening ring sleeve, enabling a lifting groove on the straightening ring sleeve to correspond to the position of a lower adjusting slide bar on the fixed ring sleeve, respectively penetrating guide slide bars through the straightening ring sleeve, fixing the lower ends of the guide slide bars on the fixed ring sleeve, moving the straightening ring sleeve to be arranged on the upper side of the fixed ring sleeve, then installing a supporting platform, enabling an upper adjusting slide bar on the supporting platform to correspond to the position of a lower adjusting slide bar on the fixed ring sleeve when the supporting platform is installed, and fixing the upper end of each guide slide bar on the supporting platform;
(3) the adjusting sliding sleeves at two ends of the lifting screw are respectively sleeved on the upper adjusting sliding rod and the lower adjusting sliding rod, then the lifting screw is moved to be abutted against a lifting groove on the lifting block, then the external connecting block is installed, the lifting groove on the external connecting block and the lifting groove on the lifting block are folded to form a lifting hole, the lifting screw is matched with a lifting thread in the lifting hole, the lifting screw is screwed on the screwing part through acting, and then the straightening ring sleeve moves towards the direction of the supporting platform until the straightening ring sleeve moves out from the upper end of the steel bar to be straightened.
2. The method of straightening pile head rebar according to claim 1, characterized in that: the straightening inner hole comprises a straightening front hole and a straightening rear hole which are arranged on the same central line, the straightening front hole is arranged on one side of the supporting platform, the diameter of the straightening front hole is larger than that of the straightening rear hole, a straightening inner sleeve is embedded in the straightening front hole and is arranged on the same central line with the straightening front hole, one end, facing the straightening rear hole, of the straightening inner sleeve abuts against the bottom of the straightening front hole, the length of the straightening inner sleeve along the central line direction of the straightening inner sleeve is consistent with that of the straightening front hole along the central line direction of the straightening front hole, the inner hole of the straightening inner sleeve is used for straightening reinforcing steel bars, and the inner diameter of the straightening inner sleeve is smaller than that of the straightening rear hole; the inner wall of the straightening front hole is symmetrically provided with two vertical grooves by taking the center line of the straightening front hole as a symmetry axis, the vertical grooves extend in the direction parallel to the center line of the straightening front hole, one end of each vertical groove extends to the bottom of the straightening front hole, the other end of each vertical groove is communicated with the straightening ring sleeve, the hole bottom of the straightening front hole and the position corresponding to each vertical groove are provided with a transverse groove in the direction of the hole diameter of the straightening front hole in an extending manner, the transverse groove is communicated with the corresponding vertical groove to form an L-shaped bent groove, a vertical rod extending in the extending direction of the vertical groove is accommodated in each vertical groove, the length of each vertical rod is larger than that of each vertical groove, each vertical rod can be in sliding fit with the vertical groove in the extending direction of the vertical groove, one end, facing towards the straightening rear hole, of each vertical rod is bent in the extending direction of the transverse groove to form a transverse rods, the transverse rods are accommodated in the transverse grooves, one end, on the side of the straightening ring sleeve, where the straightening front hole is provided with an arched pull handle, the two ends of the arched pull handle are respectively hinged with one ends extending out of the two vertical rods outside the straightening vertical rods through hinge shafts, the two hinge shafts are arranged along the direction parallel to the central line of the cross rod and have the same central line, and when the arched pull handle rotates to the position where the plane is vertical to the central line of the straightening ring sleeve, the projection of the arched pull handle along the direction vertical to the central line of the straightening ring sleeve is positioned outside the projection of the straightening inner sleeve along the direction of the central line of the straightening ring sleeve.
3. The method of straightening pile head rebar according to claim 2, characterized in that: and an arc-shaped chamfer is arranged at the orifice of the inner hole at one end of the straightening inner sleeve, which is far away from the straightening back hole.
4. The method of straightening pile head rebar according to claim 2, characterized in that: and a plurality of annular oil grooves which are the same as the center line of the straightening front hole are uniformly arranged on the inner wall of the straightening front hole along the direction of the center line of the straightening front hole at intervals, and the annular oil grooves are communicated with the vertical grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011333799.8A CN112387900B (en) | 2020-11-24 | 2020-11-24 | Method for straightening pile head reinforcing steel bar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011333799.8A CN112387900B (en) | 2020-11-24 | 2020-11-24 | Method for straightening pile head reinforcing steel bar |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112387900A CN112387900A (en) | 2021-02-23 |
| CN112387900B true CN112387900B (en) | 2022-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011333799.8A Active CN112387900B (en) | 2020-11-24 | 2020-11-24 | Method for straightening pile head reinforcing steel bar |
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| CN210305497U (en) * | 2019-02-19 | 2020-04-14 | 中国建筑第八工程局有限公司 | Alignment instrument and construction external member |
| CN210676745U (en) * | 2019-10-24 | 2020-06-05 | 瑞森新建筑有限公司 | Simple pile head reinforcing steel bar straightening device |
| CN211161687U (en) * | 2019-12-11 | 2020-08-04 | 北京市市政四建设工程有限责任公司 | Supplementary processing support of manual hole digging pile steel reinforcement cage |
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| US3710711A (en) * | 1971-08-24 | 1973-01-16 | Webb Co | System for forming and handling annular rod bundles |
| JPH1177206A (en) * | 1997-09-01 | 1999-03-23 | Asahi Chem Ind Co Ltd | Pile reinforcement cage knitting machine, and its knitting method |
| JP2002242177A (en) * | 2001-02-15 | 2002-08-28 | Ueda Kiko Kk | Working method for cast-in-place concrete pile and carrying type steel bar bender used for the method |
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| CN207272057U (en) * | 2017-10-13 | 2018-04-27 | 南京交通工程有限公司 | Bored concrete pile sizing moulding bed |
| CN207592678U (en) * | 2017-12-18 | 2018-07-10 | 浙江工业职业技术学院 | A kind of pile crown bar straightening tool |
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| CN208527937U (en) * | 2018-07-03 | 2019-02-22 | 中建八局第二建设有限公司 | A kind of quick straightener of portable reinforcing bar |
| CN210305497U (en) * | 2019-02-19 | 2020-04-14 | 中国建筑第八工程局有限公司 | Alignment instrument and construction external member |
| CN210676745U (en) * | 2019-10-24 | 2020-06-05 | 瑞森新建筑有限公司 | Simple pile head reinforcing steel bar straightening device |
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| CN112387900A (en) | 2021-02-23 |
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